Evaluation of the Performance and Safety of a Type I Collagen-Based Medical Device (MD-Small Joints Collagen Medical Device) i the Treatment of RHIZOARTROSIS

The infiltrations will be performed using 2.5ml syringes and 26 gauge/13mm needles under complete aseptic conditions. The first 3 infiltrations will be carried out at both intra- and peri-articular levels by injecting MD-Small Joints Collagen Medical Device into the trapeziometacarpal joint until a counter-pressure is felt, preventing further penetration of the liquid; the remaining quantity (usually about 1ml) will be injected at the peri-articular level by retracting the needle tip. The fourth and fifth infiltrations will be performed only at the peri-articular level.